Add goldfish audio hw to board/generic_x86

Without it, app with audio may crash x86 emulator

Change-Id: Ie9b30a2827c0a559e7cf73b7b21604f36c379483
diff --git a/target/board/generic_x86/device.mk b/target/board/generic_x86/device.mk
index 0dd2bc0..fdd74bd 100644
--- a/target/board/generic_x86/device.mk
+++ b/target/board/generic_x86/device.mk
@@ -25,4 +25,7 @@
 PRODUCT_COPY_FILES := \
     development/data/etc/apns-conf.xml:system/etc/apns-conf.xml \
     development/data/etc/vold.conf:system/etc/vold.conf \
-    development/tools/emulator/system/camera/media_profiles.xml:system/etc/media_profiles.xml \
+    development/tools/emulator/system/camera/media_profiles.xml:system/etc/media_profiles.xml
+
+PRODUCT_PACKAGES := \
+    audio.primary.goldfish